To freak out at an extreme level with either uncontrollable convolutions or hand gestures. To Frank out you must go beyond the level of freak out and use random words and noises that do not make any sense and also move hands and body in an uncontrollable manner, much like an individual with Touretts syndrome having a tick.
When Jen found out the love of her life was coming to the party she started franking out.
An attractive boy or group of attractive boys used by a small group of girls for the sole purpose of showing off. The girls don't necessary like to be around the boys they are just there to look cute. This is a female version of arm candy.
Person 1:Man! would you look at those broads with all those cute boys!
Person 2: Aww they ain't nothing but a bunch of showboats.